3855660142 has 8 divisors (see below), whose sum is σ = 5982921000. Its totient is φ = 1861353144.

The previous prime is 3855660103. The next prime is 3855660143. The reversal of 3855660142 is 2410665583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×3855660142² = 29732230261214920328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3855660095 and 3855660104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855660143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33238392 + ... + 33238507.

It is an arithmetic number, because the mean of its divisors is an integer number (747865125).

Almost surely, 2^3855660142 is an apocalyptic number.

3855660142 is a deficient number, since it is larger than the sum of its proper divisors (2127260858).

3855660142 is a wasteful number, since it uses less digits than its factorization.

3855660142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66476930.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 3855660142 is about 62093.9622024557. The cubic root of 3855660142 is about 1568.0728978217.

The spelling of 3855660142 in words is "three billion, eight hundred fifty-five million, six hundred sixty thousand, one hundred forty-two".